Changeable bulletin-board.



1; TED STATES PATENT OFFICE.

ADOLIEH SPIELMANN, OIE CHICAGQILLINOIS.

CHANGEABLE BULLETIN-BOARD.

Specification of Letters Patent.

Application filed ovember 20,1911. Serial N 0. 661,388.

To all whom it may concern: 7 I I Be it known that I, AooLPH 'SPIELMANN,a citizen of the United States, Chicago, in the county of Cook and Stateof Illinois, have invented certain new and use ful Improvements inChangeable Bulletin- Boards, of which the following is a specification.

This invention relates to bulletin-board's and aims to produce abulletin-board which will present a neat and pleasing appearance,

which will firmly and securely retain the like reference charactersdenote removable characters in position thereon and on which thecharacters can be readily,

and quickly changed, thus making the board useful'and desirable forhotel an-,

nou'ncements, train arrivals anddepartures,

telegraphic reports, base-ball score boards, store directories,or-announcements of any character.

The invention in one of its preferred and practical forms will beunderstood from the following description when considered in connectionwith the accompanying draw:

'ings throughout the various views of which similar parts. I 7

Referring. to .the drawings Figure ,1 is

a" front elevation partiallyin section of a' bulletin board embodying myinvention. Fig.-2 is a transverse sectional view taken Fig. 3 is'a dotail perspective view of one of my improved on the line 2-2 of Fig. 1.

character bearing velementstFig. 4. is an enlarged fragmentary ilewSlIllllaI to' the .view shown in Fig.2 and Fig. 5 is a detail enlargedsectional View of one of my chan-,

nel-shaped members with the cloth cover: ingremoved.

Fromthe drawings it will be observed that the board comprises a framehaving a back 5secured to top and bottom members 6 and 7 and end members8 and 9, respectively, Within this frameis arranged a series ofchannel-shape members 11 prefering elements. In some instances'thechanresiding at sired instruction,

nel members ma PatentedNov.25,19 13.

be arranged one upon the other with t eir flanges adjacent and having noinsertion or material between but in the preferred'form of my inventionI .have covered each of the the flanges,

channel members with a piece'of textile ma:

base 152 face of each of the flanges-13. This textile covering terial14, velvet being very suitable for the purpose, which covers the frontface of the f and extends back over the 'outer may be glued or otherwisesecured "if to the members so that all exposed portions are covered andtwo thicknesses 'of the ma- 1,76 cover ng 'not- 1 terial are presentbetween each pair of adjacent flanges. The 'textile only adds totheattractiveness of the device by giving it a smooth and finishedappear .ance but also forms frictional surfaces between(adjacentchann-el flanges to assist'm gripping and holding the,character bearing;

'elementsin position.

The character bearingelements, designated. generally by referencecharacter 10, are formed from a single piece of material, preferablysheet-metal, which is folded upon itself so as to provide a flat forwardface 15 reinforced at theback' by the fold'sd i and l7 and having arearwardly proJectingextension 1'8 which is adaptedtobe inserted betweenadjacent flanges of the channel members and forms the supportingportion, 1

of the element. The flat forward face 15 of the element is'provid edwith anysuitable character such as a letteror figure, for in-- stance,and by selecting the proper elements them onthe board any deinformationor announcement may be speedily and'easily set up or presented The sizeof the board and the and positioning number of channel members can bevaried,

of course, to meet therequirements of any particular locality or any useto which the board, may be put. a'nd it will be manifest that the numberref lines of information which can be set up and the size' of theannouncement. is limited only by the size of the board and the number'ing elements at hand.

By reason of the fact that'the channel men'ibers are made of resilientvmaterial it will be apparent that the-flanges of adjacentmembers-cooperate to grip and hold the supporting portions 18 of thecharactei ele- ,ments in position and the grippingaction of the flangesis further augmcnted by the textile covering applied to each member.

of character bear- The character bearing elements are accordinglygripped and held in position but,

. because of the resilient character of the channel members and thecovering, they may be quite easily withdrawn from between the channelmembers by simply grasping the edges of the forward face between thefingers and exerting a slight pull. 'It will thus be obvious that thecharacter bearing elements may be inserted and removed at will with verylittle effort and that when once in position they are gripped and heldagainst accidental displacement. Y

While I have shown and described a pre-' ferred embodiment of myinvention it :will be obvious that various changes in the size, shape,proportion and arrangement of the various parts may be resorted toWithin the therebetween and having the said flanges extending rearwardlyin said frame and pressed inwardly of the member into substantiallyparallel relation, and a plurality of character-bearing members eachhaving a rearwardly extending projection adapted to be inserted betweenand retained by adjacent flanges of two channel-shaped members wherebythe character-bearin elements are held in position.

2. In a changeable bulletin board, the combination of a frame, a seriesof channelshaped members having resilient flanges, the adjacent flangesof contiguous members being disposed in juxtaposition, the resilientflanges tending to diverge and each being held by the adjacent flange insubstantially parallel relation, and a plurality of character-bearingmembers each having a rearwardly extending stem adapted to be insertedbetween and frictionally held by the adjacent flanges.

ADOLPH SPIELMANN.

\Vitnesses IRA J. VViLson,

HOLMES.

